A couple of issues I had with this plugin are:
* The PinIt button didn't align with the image. It was over the left a bit and looked sloppy.
* Around the PinIt button was a white rectangle that extended the width of the content area. Because the background of my content area is not white (more of a light beige), it again looked sloppy.
Otherwise it does what it claims. It just doesn't work with my theme. Hopefully in the next update the background will be transparent and it will line up better with images.
To the author, if you'd like to see my site layout to help this description make sense it is here: http://www.dawnsrecipes.com